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ꢈꢇꢉ ꢁꢊ ꢂꢋ ꢌꢍ ꢂ ꢌ ꢉꢇꢂꢎ ꢊꢎꢌꢍ ꢉ ꢇ ꢉꢉ ꢇꢏ
SLRS049C − FEBRUARY1997 − REVISED AUGUST 2004
DW OR N PACKAGE
(TOP VIEW)
D
500-mA Rated Collector Current (Single
Output)
D
D
D
High-Voltage Outputs . . . 50 V
Output Clamp Diodes
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
1B
2B
1C
2C
3C
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5C
6C
7C
8C
COM
3B
Inputs Compatible With Various Types of
Logic
4B
5B
D
Relay Driver Applications
6B
D
Compatible with ULN2800A Series
7B
8B
description/ordering information
GND
The ULN2803A is a high-voltage, high-current Darlington
transistor array. The device consists of eight npn Darlington pairs
that feature high-voltage outputs with common-cathode clamp
diodes for switching inductive loads. The collector-current rating of
each Darlington pair is 500 mA. The Darlington pairs may be
connected in parallel for higher current capability.
Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line
drivers, and logic buffers. The ULN2803A has a 2.7-kΩseries base resistor for each Darlington pair for operation
directly with TTL or 5-V CMOS devices.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP (N)
Tube of 20
Tube of 40
Reel of 2000
ULN2803AN
ULN2803AN
−40°C to 85°C
ULN2803ADW
SOIC (DW)
ULN2803A
ULN2003ADWR
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 2004, Texas Instruments Incorporated
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1
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